ACTIV Financial Systems website screenshot

ACTIV Financial Systems

ACTIV Financial Systems is a provider of real-time and historical financial market data, best known for the ACTIV Feed consolidated multi-asset market data feed delivering global equities, options, futures, foreign exchange, and fixed income content with associated analytics and low-latency delivery to trading firms, banks, and financial applications. ACTIV Financial was acquired by Options Technology (Options-IT) in 2021 and its market data capabilities are delivered as part of the Options Atlas platform; www.activfinancial.com now redirects to www.options-it.com. A live public developer surface remains: the OnePlatform Web API (One API), a WebSocket/WebAssembly JavaScript API with a developer portal at weboneapi.activfinancial.com and 25 first-party packages on npm under the @activfinancial scope, with gateway hosts and credentials provisioned per customer rather than self-serve.

ACTIV Financial Systems publishes 1 API on the APIs.io network. Tagged areas include Company, Fintech, Market Data, Financial Data, and Real-Time Data.

ACTIV Financial Systems’ developer surface includes documentation, API reference, getting-started guide, sandbox, support, engineering blog, authentication, and 13 more developer resources.

🌐 Visit website 📡 Source on GitHub
28.3/100 emerging ▬ flat Agent 21/100 agent aware Full breakdown ↓
scored 2026-07-27 · rubric v0.5
1 APIs
CompanyFintechMarket DataFinancial DataReal-Time DataStreamingWebSocketTrading InfrastructureOptions Technology

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 28.3/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 13.0 / 20
Commercial Clarity 2.1 / 20
Operational Transparency 2.7 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 21/100 · agent aware
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 4 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/activ-financial-systems: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

ACTIV OnePlatform Web API (One API)

WebSocket/WebAssembly JavaScript API for the ACTIV OnePlatform (Options Atlas), delivering real-time streaming subscriptions, snapshots, queries, and time-series (tick, intraday...

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Activ Financial Systems Authentication

credentials · 1 scheme

SECURITY

Activ Financial Systems Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 Sandbox
Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

WellKnown
WellKnown
 LLMsTxt
LLMsTxt

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Lifecycle
Lifecycle
 Components
Components
 ErrorCatalog
ErrorCatalog

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages
 SDKs
SDKs

Access & Security 2

Authentication, authorization, and security posture

Authentication
Authentication
 DomainSecurity
DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: activ-financial-systems
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/activ-financial-systems.png
name: ACTIV Financial Systems
description: 'ACTIV Financial Systems is a provider of real-time and historical financial market data, best known for the
  ACTIV Feed consolidated multi-asset market data feed delivering global equities, options, futures, foreign exchange, and
  fixed income content with associated analytics and low-latency delivery to trading firms, banks, and financial applications.
  ACTIV Financial was acquired by Options Technology (Options-IT) in 2021 and its market data capabilities are delivered as
  part of the Options Atlas platform; www.activfinancial.com now redirects to www.options-it.com. A live public developer
  surface remains: the OnePlatform Web API (One API), a WebSocket/WebAssembly JavaScript API with a developer portal at weboneapi.activfinancial.com
  and 25 first-party packages on npm under the @activfinancial scope, with gateway hosts and credentials provisioned per customer
  rather than self-serve.'
url: https://raw.githubusercontent.com/api-evangelist/activ-financial-systems/refs/heads/main/apis.yml
x-type: company
x-source: bessemer-venture-partners-portfolio
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-22'
x-acquired-by: options-technology
x-acquirer-url: https://www.options-it.com
tags:
- Company
- Fintech
- Market Data
- Financial Data
- Real-Time Data
- Streaming
- WebSocket
- Trading Infrastructure
- Options Technology
apis:
- name: ACTIV OnePlatform Web API (One API)
  description: WebSocket/WebAssembly JavaScript API for the ACTIV OnePlatform (Options Atlas), delivering real-time streaming
    subscriptions, snapshots, queries, and time-series (tick, intraday bar, history bar) market data through a session contract
    (connect to a OneApi Gateway, then Session.snapshot/subscribe/query/timeSeries). Not REST - the machine-readable contract
    is the TypeDoc JSON shipped in the "@activfinancial/one-api" npm package.
  humanURL: https://weboneapi.activfinancial.com/
  baseURL: https://weboneapi.activfinancial.com
  tags:
  - Market Data
  - Real-Time Data
  - Streaming
  - WebSocket
  - Time Series
  properties:
  - type: Documentation
    url: https://weboneapi.activfinancial.com/documentation
  - type: APIReference
    url: https://weboneapi.activfinancial.com/documentation
  - type: GettingStarted
    url: https://weboneapi.activfinancial.com/tutorials
  - type: Sandbox
    url: https://weboneapi.activfinancial.com/playground
  - type: SourceCode
    url: https://github.com/activfinancial/one-api-examples
  - type: ErrorCatalog
    url: errors/activ-financial-systems-error-codes.yml
  - type: Authentication
    url: authentication/activ-financial-systems-authentication.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.activfinancial.com
- type: DeveloperPortal
  url: https://weboneapi.activfinancial.com/
- type: Documentation
  url: https://weboneapi.activfinancial.com/documentation
- type: APIReference
  url: https://weboneapi.activfinancial.com/documentation
- type: GettingStarted
  url: https://weboneapi.activfinancial.com/tutorials
- type: Sandbox
  url: sandbox/activ-financial-systems-sandbox.yml
- type: GitHubOrganization
  url: https://github.com/activfinancial
- type: Support
  url: https://www.options-it.com/support
- type: Blog
  url: https://www.options-it.com/news
- type: PrivacyPolicy
  url: https://www.options-it.com/privacy
- type: StatusPage
  url: https://status.options-it.com
- type: Lifecycle
  url: lifecycle/activ-financial-systems-lifecycle.yml
- type: Packages
  url: packages/activ-financial-systems-packages.yml
- type: SDKs
  url: packages/activ-financial-systems-packages.yml
- type: Components
  url: components/activ-financial-systems-components.yml
- type: ErrorCatalog
  url: errors/activ-financial-systems-error-codes.yml
- type: Authentication
  url: authentication/activ-financial-systems-authentication.yml
- type: WellKnown
  url: well-known/activ-financial-systems-well-known.yml
- type: LLMsTxt
  url: llms/activ-financial-systems-llms.txt
- type: DomainSecurity
  url: security/activ-financial-systems-domain-security.yml
x-enrichment:
  date: '2026-07-22'
  status: enriched
  pass: round-2026-06-20
  note: contract discovery found the live OnePlatform Web API portal (weboneapi.activfinancial.com), 25 first-party npm packages,
    TypeDoc contract in-package (no OpenAPI - WebSocket/WASM session API), 98-member StatusCode registry, Options Technology
    status page.